146409493 has 2 divisors, whose sum is σ = 146409494. Its totient is φ = 146409492.

The previous prime is 146409469. The next prime is 146409581. The reversal of 146409493 is 394904641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88679889 + 57729604 = 9417^2 + 7598^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146409493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146409433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73204746 + 73204747.

It is an arithmetic number, because the mean of its divisors is an integer number (73204747).

Almost surely, 2^146409493 is an apocalyptic number.

It is an amenable number.

146409493 is a deficient number, since it is larger than the sum of its proper divisors (1).

146409493 is an equidigital number, since it uses as much as digits as its factorization.

146409493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 146409493 is about 12099.9790495686. The cubic root of 146409493 is about 527.0555758991.

The spelling of 146409493 in words is "one hundred forty-six million, four hundred nine thousand, four hundred ninety-three".